PET Film 500 Micron

As a manufacturer, we produce pet film 500 micron as a thick 0.5mm PET film sheet and roll for insulation gaskets, die-cut support sheets, structural spacers, and rigid transparent backing sheets. This 500um material is chosen when thin film bends too easily and the finished part needs firmer support, cleaner punched holes, and stable spacing. Before bulk production, thickness tolerance, flatness, cutting edge condition, and heat shrinkage can be checked by sample trial.

Product Overview

Protective Film Factory produces 500um PET film for technical parts that need more body than thin polyester film, but do not require a heavy rigid plastic plate. This 0.5mm sheet gives firm handling and better shape retention during punching, die cutting, and assembly. It is suitable for electrical insulation parts, spacer components, transparent support liners, and punched separator pieces.

For this thickness, consistency matters more than the nominal value alone. Before cutting, our factory sample checks usually include caliper measurement across the sheet or roll width. For a 500um grade, thickness tolerance is commonly controlled within +/-5% to +/-10%, depending on final specification and sample approval. This helps reduce problems with stack height, screw-hole fitting, slot clearance, and final assembly gap.

Unlike general thin polyester film, this thick polyester film is made for parts that must keep their shape after cutting. In sample observation, the sheet should not curl heavily, loosen around punched holes, or bend too easily during fitting.

Benefits

• Higher stiffness than thinner material, helping die-cut parts stay stable during handling and installation.
• 500um thickness supports gasket build-up, spacer height, screw-hole fitting, and rigid backing use.
• Smooth PET surface helps reduce drag during punching, stacking, and sheet feeding.
• Good sheet flatness supports cleaner cutting for larger insulation pads, support plates, and separator pieces.
• Clear to semi-clear appearance helps visual alignment when used as a rigid transparent PET backing sheet.
• Sample checks can include edge burrs, edge whitening, hole roundness, inner-corner cracking, lay-flat condition, and curl after cutting.

What affects punched-hole stability and sheet flatness in 0.5mm PET film?

Punched-hole stability in 0.5mm PET film depends on material stiffness, punch sharpness, hole diameter, tool clearance, and sheet flatness before cutting. In our sample observation, small holes and narrow slots may show slight whitening, oval deformation, or edge stress if the punch tool is worn or the sheet has curl. For insulation gaskets and structural spacers, the trial should check hole roundness, screw-hole fitting, burr level, and whether the part stays flat after punching. These checks help reduce assembly misalignment and unstable spacing.

TDS

Applications

• Electrical insulation gaskets for motors, battery packs, transformers, power modules, and electronic assemblies.
• Die-cut support sheets where 500um stiffness helps parts remain flat during handling.
• Structural spacer films used to maintain a controlled gap between assembled components.
• Punched insulation parts with screw holes, slots, windows, or positioning holes.
• Rigid transparent backing sheets for visual alignment, display support, or protective support layers.
• Separator sheets for industrial fixtures, laminated parts, and precision assembly processes.

How should 500um PET film be checked before die cutting insulation gaskets or spacers?

Before die cutting 500um PET film into insulation gaskets or spacers, production teams should confirm thickness, flatness, heat response, and cut-edge behavior. For new parts, a small cutting trial is usually the safest first step: check the caliper across the sheet, punch the required holes, then review burrs, hole deformation, curl, and shrinkage after controlled heat exposure. After a 150C x 30min in-house test, the part should be reviewed for hole-position change and spacer clearance. If the part will be used in a tight assembly, stack height consistency and screw-hole fitting should also be confirmed.

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FAQ

Is pet film 500 micron the same as thin PET film sheet?

This refers to 500um / 0.5mm thick PET film with higher stiffness for spacers, gaskets, punched insulation parts, and rigid support sheets.

Can this film be supplied in sheets and rolls?

It can be prepared as roll material, slit rolls, or cut sheets depending on cutting and assembly requirements.

Will punched holes deform during processing?

Hole stability depends on tool sharpness, hole size, punch clearance, and sheet flatness. Sample punching is recommended before bulk cutting.

Is it suitable for insulation gasket applications?

After sample validation, it can be used for insulation gaskets, separator pieces, and spacer components that need stable thickness, clean cutting, and reliable fitting.